<template>
  <div class="msite">

    <!-- 首页头部 -->
    <HeaderTop :title="address.name">
      <router-link slot="search" to="/search" class="header_search">
        <i class="iconfont icon-sousuo"></i>
      </router-link>
      <router-link slot="login" to="/login" class="header_login">
        <span class="header_login_text">登录|注册</span>
      </router-link>
    </HeaderTop>

    <!-- 首页导航 -->
    <nav class="msite_nav border-1px">
      <div class="swiper-container" v-if="categorysArr.length>0">
        <div class="swiper-wrapper">
          <div class="swiper-slide" v-for="(cs, index) in categorysArr" :key="index">
            <a href="javascript:" class="link_to_food" v-for="(c, index2) in cs" :key="index2">
              <div class="food_container">
                <img :src="imgBaseUrl+c.image_url">
              </div>
              <span>{{c.title}}</span>
            </a>
          </div>
        </div>
        <!-- Add Pagination -->
        <div class="swiper-pagination"></div>
      </div>
      <img src="./images/msite_back.svg" v-else>
    </nav>

    <!-- 首页附近商家 -->
    <div class="msite_shop_list border-1px">
      <div class="shop_header">
        <i class="iconfont icon-xuanxiang"></i>
        <span class="shop_header_title">附近商家</span>
      </div>
      <ShopList></ShopList>
    </div>
  </div>
</template>
<script>
    import {mapState} from 'vuex'
    import Swiper from 'swiper';
    import '../../../node_modules/swiper/css/swiper.min.css';

    import HeaderTop from '../../components/HeaderTop/HeaderTop.vue';
    import ShopList from '../../components/ShopList/ShopList.vue';

    // import './BaiduAPI.js';

    export default {
        data() {
            return {
                imgBaseUrl: 'https://fuss10.elemecdn.com'
            }
        },

        mounted() {

            this.$store.dispatch('getAddress');
            this.$store.dispatch('getCategorys');
            this.$store.dispatch('getShops');

            this.$store.dispatch('changeLocation');

            //创建一个Swiper
            new Swiper('.swiper-container', {
                pagination: {
                    el: '.swiper-pagination',
                },
                loop: false
            });
        },

        updated() {
            // console.log(window.Blongitude);
            // this.$store.dispatch('changeLocation', {
            //     longitude: window.Blongitude,
            //     latitude: window.Blatitude
            // });
            // this.$store.dispatch('getAddress');
        },

        computed: {
            ...mapState(['address', 'categorys','latitude']),

            //将获得的食品分类划分为食品大小数组
            categorysArr() {
                const max = 8;
                const arr = [];
                const {categorys} = this;
                let smallArr = [];
                categorys.forEach((c, index) => {
                    if (smallArr.length === 0) {
                        arr.push(smallArr)
                    }
                    smallArr.push(c);
                    if (smallArr.length === max) {
                        smallArr = []
                    }
                });
                return arr
            }
        },
        watch: {

            //当食品大小数组变化后创建新的Swiper
            categorys(value) {
                this.$nextTick(() => {
                    new Swiper('.swiper-container', {
                        pagination: {
                            el: '.swiper-pagination',
                        },
                        loop: false
                    })
                })
            },

            //当经纬度的数据拿到时
            latitude(value) {
                this.$store.dispatch('getAddress');
            }
        },
        components: {
            HeaderTop,
            ShopList
        }
    }
</script>
<style lang="stylus" rel="stylesheet/stylus">
  @import "../../common/stylus/mixins.styl"
  .msite
    width 100%

    .header
      background-color #02a774
      position fixed
      z-index 100
      left 0
      top 0
      width 100%
      height 45px

      .header_search
        position absolute
        left 15px
        top 50%
        transform translateY(-50%)
        width 10%
        height 50%

        .icon-sousuo
          font-size 25px
          color #fff

      .header_title
        position absolute
        top 50%
        left 50%
        transform translate(-50%, -50%)
        width 50%
        color #fff
        text-align center

        .header_title_text
          font-size 20px
          color #fff
          display block

      .header_login
        font-size 14px
        color #fff
        position absolute
        right 15px
        top 50%
        transform translateY(-50%)

        .header_login_text
          color #fff

    .msite_nav
      bottom-border-1px(#e4e4e4)
      margin-top 45px
      height 200px
      background #fff

      .swiper-container
        width 100%
        height 100%

        .swiper-wrapper
          width 100%
          height 100%

          .swiper-slide
          display flex
          justify-content center
          align-items flex-start
          flex-wrap wrap
          .link_to_food
            width 24%
            display inline-block

            .food_container
              display block
              width 100%
              text-align center
              padding-bottom 10px
              font-size 0

              img
                display inline-block
                width 50px
                height 50px

            span
              display block
              width 100%
              text-align center
              font-size 13px
              color #666

      .swiper-pagination
        > span.swiper-pagination-bullet-active
          background #02a774

  .msite_shop_list
    top-border-1px(#e4e4e4)
    margin-top 10px
    background #fff

    .shop_header
      padding 10px 10px 0 10px

    .shop_icon
      margin-left 5px
      color #999

    .shop_header_title
      color #999
      font-size 14px
      line-height 20px

</style>
